The only limited damage runes I can think of are field runes:
- Fire field
- Energy field
- Poison field
- Fire wall
- Energy wall
- Poison wall
- Fire bomb
- Energy bomb
- Poison bomb
All other attack runes have a variable damage, that has a range which depends on player level/ml/skill
Even soulfire depends on players magic level..
.
The ones Im not 100% sure are the damage over time spells, such as: utori pox, utori kor, etc...